Question

Common feature of electronic configuration of the element at the end on period2 and period3

Answer 1

the common features of period 2&3 is in there outermost shell has 1 electron

Answer 2

Explanation:

the last elements of period 2 and period 3 are neon and argon . There are 8 valence electron in this element and hence has fully filled electronic configuration and is a stable element......

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